A slippery surface has the capability to protect the substrate surface, which can prevent substrate corrosion in a harsh environment. However, existing slippery surfaces have the limitation of insufficient oil-locking capability for rough structures, which limits their practical application. To solve the aforementioned limitation, the authors developed a slippery surface with a good oil-locking capability. First, a wire-cutting machine tool was used to fabricate ternary coupled grooved structures on an aluminum (Al) substrate, which could increase the lubricant-storage capacity of the microstructures, and the substrate was named slippery porous surface with groove-textured aluminum (Slips-G-Al). Then, a surface durability test was performed involving lubricant shear, sandpaper wear and water impact. The chemical stability test involved acid, alkali, salt corrosion and weather resistance tests, which showed that Slips-G-Al had a good lubricant-storage capacity compared with the traditional Slips surface. In addition, the self-cleaning performance and the fog collection capability of Slips-G-Al were also studied. Finally, an electrochemical corrosion test of Slips-G-Al was carried out. The findings showed remarkable application prospects in the aerospace and shipbuilding fields.

中文翻译：

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具有三元耦合结构的光滑表面可提高润滑剂存储能力

光滑的表面具有保护基材表面的能力，可以防止恶劣环境下的基材腐蚀。然而，现有的滑面存在对粗糙结构锁油能力不足的限制，限制了其实际应用。为了解决上述限制，作者开发了一种具有良好锁油能力的滑面。首先，利用线切割机床在铝（Al）基底上制备三元耦合凹槽结构，该结构可以增加微结构的润滑剂存储能力，该基底被命名为具有凹槽纹理铝的光滑多孔表面（卡瓦-G-Al)。然后，进行表面耐久性测试，包括润滑剂剪切、砂纸磨损和水冲击。化学稳定性测试涉及酸、碱、盐腐蚀和耐候性测试，结果表明Slips-G-Al与传统Slips表面相比具有良好的润滑储存能力。此外，还研究了Slips-G-Al的自清洁性能和集雾能力。最后对Slips-G-Al进行了电化学腐蚀试验。研究结果显示出在航空航天和造船领域的显着应用前景。